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Finding the Fourth Proportional to 72,153.80, 108,230.70 and 59,031.80

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Solution

The fourth proportional to 72,153.80, 108,230.70 and 59,031.80 is: 88,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,153.80 : 108,230.70 = 59,031.80 : x
  2. Step 2: Convert to fraction form
    72,153.80/108,230.70 = 59,031.80/x
  3. Step 3: Cross multiply
    72,153.80x = 108,230.70 × 59,031.80
  4. Step 4: Simplify right side
    72,153.80x = 6,389,053,036.26
  5. Step 5: Solve for x
    x = 6,389,053,036.26/72,153.80
  6. Step 6: Final answer
    x = 88,547.70

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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.