Home / 85,139.24-117,478.08-51,605.24

Finding the Fourth Proportional to 85,139.24, 117,478.08 and 51,605.24

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Solution

The fourth proportional to 85,139.24, 117,478.08 and 51,605.24 is: 71,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,139.24 : 117,478.08 = 51,605.24 : x
  2. Step 2: Convert to fraction form
    85,139.24/117,478.08 = 51,605.24/x
  3. Step 3: Cross multiply
    85,139.24x = 117,478.08 × 51,605.24
  4. Step 4: Simplify right side
    85,139.24x = 6,062,483,925.75
  5. Step 5: Solve for x
    x = 6,062,483,925.75/85,139.24
  6. Step 6: Final answer
    x = 71,206.70

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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.