Home / 91,779.76-126,700.56-61,554.04

Finding the Fourth Proportional to 91,779.76, 126,700.56 and 61,554.04

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Solution

The fourth proportional to 91,779.76, 126,700.56 and 61,554.04 is: 84,974.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,779.76 : 126,700.56 = 61,554.04 : x
  2. Step 2: Convert to fraction form
    91,779.76/126,700.56 = 61,554.04/x
  3. Step 3: Cross multiply
    91,779.76x = 126,700.56 × 61,554.04
  4. Step 4: Simplify right side
    91,779.76x = 7,798,931,338.26
  5. Step 5: Solve for x
    x = 7,798,931,338.26/91,779.76
  6. Step 6: Final answer
    x = 84,974.41

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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.