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Finding the Fourth Proportional to 94,030.70, 129,689.80 and 65,349.78

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Solution

The fourth proportional to 94,030.70, 129,689.80 and 65,349.78 is: 90,132.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,030.70 : 129,689.80 = 65,349.78 : x
  2. Step 2: Convert to fraction form
    94,030.70/129,689.80 = 65,349.78/x
  3. Step 3: Cross multiply
    94,030.70x = 129,689.80 × 65,349.78
  4. Step 4: Simplify right side
    94,030.70x = 8,475,199,898.24
  5. Step 5: Solve for x
    x = 8,475,199,898.24/94,030.70
  6. Step 6: Final answer
    x = 90,132.26

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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.