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Finding the Fourth Proportional to 81,657,681.60, 122,486,522.40 and 58,699,430.40

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Solution

The fourth proportional to 81,657,681.60, 122,486,522.40 and 58,699,430.40 is: 88,049,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,681.60 : 122,486,522.40 = 58,699,430.40 : x
  2. Step 2: Convert to fraction form
    81,657,681.60/122,486,522.40 = 58,699,430.40/x
  3. Step 3: Cross multiply
    81,657,681.60x = 122,486,522.40 × 58,699,430.40
  4. Step 4: Simplify right side
    81,657,681.60x = 7,189,889,096,556,841
  5. Step 5: Solve for x
    x = 7,189,889,096,556,841/81,657,681.60
  6. Step 6: Final answer
    x = 88,049,145.60

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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.