Home / 72,024,136.40-99,393,313.09-39,429,088.40

Finding the Fourth Proportional to 72,024,136.40, 99,393,313.09 and 39,429,088.40

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Solution

The fourth proportional to 72,024,136.40, 99,393,313.09 and 39,429,088.40 is: 54,412,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,024,136.40 : 99,393,313.09 = 39,429,088.40 : x
  2. Step 2: Convert to fraction form
    72,024,136.40/99,393,313.09 = 39,429,088.40/x
  3. Step 3: Cross multiply
    72,024,136.40x = 99,393,313.09 × 39,429,088.40
  4. Step 4: Simplify right side
    72,024,136.40x = 3,918,987,728,194,487
  5. Step 5: Solve for x
    x = 3,918,987,728,194,487/72,024,136.40
  6. Step 6: Final answer
    x = 54,412,144.65

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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.