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Finding the Fourth Proportional to 94,909.20, 130,987.80 and 54,622.20

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Solution

The fourth proportional to 94,909.20, 130,987.80 and 54,622.20 is: 75,386.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,909.20 : 130,987.80 = 54,622.20 : x
  2. Step 2: Convert to fraction form
    94,909.20/130,987.80 = 54,622.20/x
  3. Step 3: Cross multiply
    94,909.20x = 130,987.80 × 54,622.20
  4. Step 4: Simplify right side
    94,909.20x = 7,154,841,809.16
  5. Step 5: Solve for x
    x = 7,154,841,809.16/94,909.20
  6. Step 6: Final answer
    x = 75,386.18

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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.