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Finding the Fourth Proportional to 65,287,779.80, 97,847,688.90 and 39,701,629.40

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Solution

The fourth proportional to 65,287,779.80, 97,847,688.90 and 39,701,629.40 is: 59,501,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,287,779.80 : 97,847,688.90 = 39,701,629.40 : x
  2. Step 2: Convert to fraction form
    65,287,779.80/97,847,688.90 = 39,701,629.40/x
  3. Step 3: Cross multiply
    65,287,779.80x = 97,847,688.90 × 39,701,629.40
  4. Step 4: Simplify right side
    65,287,779.80x = 3,884,712,682,354,294
  5. Step 5: Solve for x
    x = 3,884,712,682,354,294/65,287,779.80
  6. Step 6: Final answer
    x = 59,501,375.21

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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.