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Finding the Fourth Proportional to 85,603, 118,132.54 and 47,877.26

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Solution

The fourth proportional to 85,603, 118,132.54 and 47,877.26 is: 66,070.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603 : 118,132.54 = 47,877.26 : x
  2. Step 2: Convert to fraction form
    85,603/118,132.54 = 47,877.26/x
  3. Step 3: Cross multiply
    85,603x = 118,132.54 × 47,877.26
  4. Step 4: Simplify right side
    85,603x = 5,655,862,332.04
  5. Step 5: Solve for x
    x = 5,655,862,332.04/85,603
  6. Step 6: Final answer
    x = 66,070.84

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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.