Home / 85,688.20-118,248.42-47,963.80

Finding the Fourth Proportional to 85,688.20, 118,248.42 and 47,963.80

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Solution

The fourth proportional to 85,688.20, 118,248.42 and 47,963.80 is: 66,189.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,688.20 : 118,248.42 = 47,963.80 : x
  2. Step 2: Convert to fraction form
    85,688.20/118,248.42 = 47,963.80/x
  3. Step 3: Cross multiply
    85,688.20x = 118,248.42 × 47,963.80
  4. Step 4: Simplify right side
    85,688.20x = 5,671,643,567.20
  5. Step 5: Solve for x
    x = 5,671,643,567.20/85,688.20
  6. Step 6: Final answer
    x = 66,189.32

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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.