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Finding the Fourth Proportional to 70,064,101.20, 105,096,151.80 and 66,096,008.40

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Solution

The fourth proportional to 70,064,101.20, 105,096,151.80 and 66,096,008.40 is: 99,144,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,064,101.20 : 105,096,151.80 = 66,096,008.40 : x
  2. Step 2: Convert to fraction form
    70,064,101.20/105,096,151.80 = 66,096,008.40/x
  3. Step 3: Cross multiply
    70,064,101.20x = 105,096,151.80 × 66,096,008.40
  4. Step 4: Simplify right side
    70,064,101.20x = 6,946,436,132,180,475
  5. Step 5: Solve for x
    x = 6,946,436,132,180,475/70,064,101.20
  6. Step 6: Final answer
    x = 99,144,012.60

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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.