Home / 86,809.20-130,116.60-49,387.20

Finding the Fourth Proportional to 86,809.20, 130,116.60 and 49,387.20

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Solution

The fourth proportional to 86,809.20, 130,116.60 and 49,387.20 is: 74,025.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,809.20 : 130,116.60 = 49,387.20 : x
  2. Step 2: Convert to fraction form
    86,809.20/130,116.60 = 49,387.20/x
  3. Step 3: Cross multiply
    86,809.20x = 130,116.60 × 49,387.20
  4. Step 4: Simplify right side
    86,809.20x = 6,426,094,547.52
  5. Step 5: Solve for x
    x = 6,426,094,547.52/86,809.20
  6. Step 6: Final answer
    x = 74,025.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.