Home / 80,812,720.80-121,295,188.80-42,501,729.60

Finding the Fourth Proportional to 80,812,720.80, 121,295,188.80 and 42,501,729.60

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Solution

The fourth proportional to 80,812,720.80, 121,295,188.80 and 42,501,729.60 is: 63,792,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,812,720.80 : 121,295,188.80 = 42,501,729.60 : x
  2. Step 2: Convert to fraction form
    80,812,720.80/121,295,188.80 = 42,501,729.60/x
  3. Step 3: Cross multiply
    80,812,720.80x = 121,295,188.80 × 42,501,729.60
  4. Step 4: Simplify right side
    80,812,720.80x = 5,155,255,316,158,549
  5. Step 5: Solve for x
    x = 5,155,255,316,158,549/80,812,720.80
  6. Step 6: Final answer
    x = 63,792,621.57

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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.