Home / 90,169,116.18-124,422,882.63-50,478,820.32

Finding the Fourth Proportional to 90,169,116.18, 124,422,882.63 and 50,478,820.32

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Solution

The fourth proportional to 90,169,116.18, 124,422,882.63 and 50,478,820.32 is: 69,654,895.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,169,116.18 : 124,422,882.63 = 50,478,820.32 : x
  2. Step 2: Convert to fraction form
    90,169,116.18/124,422,882.63 = 50,478,820.32/x
  3. Step 3: Cross multiply
    90,169,116.18x = 124,422,882.63 × 50,478,820.32
  4. Step 4: Simplify right side
    90,169,116.18x = 6,280,720,335,976,219
  5. Step 5: Solve for x
    x = 6,280,720,335,976,219/90,169,116.18
  6. Step 6: Final answer
    x = 69,654,895.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.