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Finding the Fourth Proportional to 73,411,643.60, 110,117,465.40 and 39,399,419.60

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Solution

The fourth proportional to 73,411,643.60, 110,117,465.40 and 39,399,419.60 is: 59,099,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,411,643.60 : 110,117,465.40 = 39,399,419.60 : x
  2. Step 2: Convert to fraction form
    73,411,643.60/110,117,465.40 = 39,399,419.60/x
  3. Step 3: Cross multiply
    73,411,643.60x = 110,117,465.40 × 39,399,419.60
  4. Step 4: Simplify right side
    73,411,643.60x = 4,338,564,224,583,082
  5. Step 5: Solve for x
    x = 4,338,564,224,583,082/73,411,643.60
  6. Step 6: Final answer
    x = 59,099,129.40

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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.