Home / 52,312.89-78,437.75-21,111.69

Finding the Fourth Proportional to 52,312.89, 78,437.75 and 21,111.69

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Solution

The fourth proportional to 52,312.89, 78,437.75 and 21,111.69 is: 31,654.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,312.89 : 78,437.75 = 21,111.69 : x
  2. Step 2: Convert to fraction form
    52,312.89/78,437.75 = 21,111.69/x
  3. Step 3: Cross multiply
    52,312.89x = 78,437.75 × 21,111.69
  4. Step 4: Simplify right side
    52,312.89x = 1,655,953,356.74
  5. Step 5: Solve for x
    x = 1,655,953,356.74/52,312.89
  6. Step 6: Final answer
    x = 31,654.79

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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.