Home / 76,501.18-105,571.42-42,509.53

Finding the Fourth Proportional to 76,501.18, 105,571.42 and 42,509.53

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Solution

The fourth proportional to 76,501.18, 105,571.42 and 42,509.53 is: 58,663.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,501.18 : 105,571.42 = 42,509.53 : x
  2. Step 2: Convert to fraction form
    76,501.18/105,571.42 = 42,509.53/x
  3. Step 3: Cross multiply
    76,501.18x = 105,571.42 × 42,509.53
  4. Step 4: Simplify right side
    76,501.18x = 4,487,791,445.63
  5. Step 5: Solve for x
    x = 4,487,791,445.63/76,501.18
  6. Step 6: Final answer
    x = 58,663.04

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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.