Home / 76,802.56-105,988.02-42,813.21

Finding the Fourth Proportional to 76,802.56, 105,988.02 and 42,813.21

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Solution

The fourth proportional to 76,802.56, 105,988.02 and 42,813.21 is: 59,082.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,802.56 : 105,988.02 = 42,813.21 : x
  2. Step 2: Convert to fraction form
    76,802.56/105,988.02 = 42,813.21/x
  3. Step 3: Cross multiply
    76,802.56x = 105,988.02 × 42,813.21
  4. Step 4: Simplify right side
    76,802.56x = 4,537,687,357.74
  5. Step 5: Solve for x
    x = 4,537,687,357.74/76,802.56
  6. Step 6: Final answer
    x = 59,082.50

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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.