Home / 85,779.48-118,420.49-66,616.26

Finding the Fourth Proportional to 85,779.48, 118,420.49 and 66,616.26

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Solution

The fourth proportional to 85,779.48, 118,420.49 and 66,616.26 is: 91,965.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.48 : 118,420.49 = 66,616.26 : x
  2. Step 2: Convert to fraction form
    85,779.48/118,420.49 = 66,616.26/x
  3. Step 3: Cross multiply
    85,779.48x = 118,420.49 × 66,616.26
  4. Step 4: Simplify right side
    85,779.48x = 7,888,730,151.17
  5. Step 5: Solve for x
    x = 7,888,730,151.17/85,779.48
  6. Step 6: Final answer
    x = 91,965.24

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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.