Home / 81,779.04-122,581.08-42,296.40

Finding the Fourth Proportional to 81,779.04, 122,581.08 and 42,296.40

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Solution

The fourth proportional to 81,779.04, 122,581.08 and 42,296.40 is: 63,399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,779.04 : 122,581.08 = 42,296.40 : x
  2. Step 2: Convert to fraction form
    81,779.04/122,581.08 = 42,296.40/x
  3. Step 3: Cross multiply
    81,779.04x = 122,581.08 × 42,296.40
  4. Step 4: Simplify right side
    81,779.04x = 5,184,738,392.11
  5. Step 5: Solve for x
    x = 5,184,738,392.11/81,779.04
  6. Step 6: Final answer
    x = 63,399.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.