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Finding the Fourth Proportional to 65,909,280.80, 98,804,938.80 and 25,506,336.80

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Solution

The fourth proportional to 65,909,280.80, 98,804,938.80 and 25,506,336.80 is: 38,236,679.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,909,280.80 : 98,804,938.80 = 25,506,336.80 : x
  2. Step 2: Convert to fraction form
    65,909,280.80/98,804,938.80 = 25,506,336.80/x
  3. Step 3: Cross multiply
    65,909,280.80x = 98,804,938.80 × 25,506,336.80
  4. Step 4: Simplify right side
    65,909,280.80x = 2,520,152,046,536,188
  5. Step 5: Solve for x
    x = 2,520,152,046,536,188/65,909,280.80
  6. Step 6: Final answer
    x = 38,236,679.51

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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.