Home / 72,717,861.60-109,076,792.40-45,508,082.40

Finding the Fourth Proportional to 72,717,861.60, 109,076,792.40 and 45,508,082.40

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Solution

The fourth proportional to 72,717,861.60, 109,076,792.40 and 45,508,082.40 is: 68,262,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,717,861.60 : 109,076,792.40 = 45,508,082.40 : x
  2. Step 2: Convert to fraction form
    72,717,861.60/109,076,792.40 = 45,508,082.40/x
  3. Step 3: Cross multiply
    72,717,861.60x = 109,076,792.40 × 45,508,082.40
  4. Step 4: Simplify right side
    72,717,861.60x = 4,963,875,656,466,894
  5. Step 5: Solve for x
    x = 4,963,875,656,466,894/72,717,861.60
  6. Step 6: Final answer
    x = 68,262,123.60

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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.