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Finding the Fourth Proportional to 72,293,868.60, 108,440,111.70 and 17,706,694.20

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Solution

The fourth proportional to 72,293,868.60, 108,440,111.70 and 17,706,694.20 is: 26,559,872.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,293,868.60 : 108,440,111.70 = 17,706,694.20 : x
  2. Step 2: Convert to fraction form
    72,293,868.60/108,440,111.70 = 17,706,694.20/x
  3. Step 3: Cross multiply
    72,293,868.60x = 108,440,111.70 × 17,706,694.20
  4. Step 4: Simplify right side
    72,293,868.60x = 1,920,115,896,885,742
  5. Step 5: Solve for x
    x = 1,920,115,896,885,742/72,293,868.60
  6. Step 6: Final answer
    x = 26,559,872.01

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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.