Home / 90,113.16-124,352.64-53,820.76

Finding the Fourth Proportional to 90,113.16, 124,352.64 and 53,820.76

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Solution

The fourth proportional to 90,113.16, 124,352.64 and 53,820.76 is: 74,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,113.16 : 124,352.64 = 53,820.76 : x
  2. Step 2: Convert to fraction form
    90,113.16/124,352.64 = 53,820.76/x
  3. Step 3: Cross multiply
    90,113.16x = 124,352.64 × 53,820.76
  4. Step 4: Simplify right side
    90,113.16x = 6,692,753,592.81
  5. Step 5: Solve for x
    x = 6,692,753,592.81/90,113.16
  6. Step 6: Final answer
    x = 74,270.55

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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.