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Finding the Fourth Proportional to 86,019.59, 118,702.98 and 47,781.60

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Solution

The fourth proportional to 86,019.59, 118,702.98 and 47,781.60 is: 65,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.59 : 118,702.98 = 47,781.60 : x
  2. Step 2: Convert to fraction form
    86,019.59/118,702.98 = 47,781.60/x
  3. Step 3: Cross multiply
    86,019.59x = 118,702.98 × 47,781.60
  4. Step 4: Simplify right side
    86,019.59x = 5,671,818,309.17
  5. Step 5: Solve for x
    x = 5,671,818,309.17/86,019.59
  6. Step 6: Final answer
    x = 65,936.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.