Home / 76,459.18-105,510.08-42,469.86

Finding the Fourth Proportional to 76,459.18, 105,510.08 and 42,469.86

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Solution

The fourth proportional to 76,459.18, 105,510.08 and 42,469.86 is: 58,606.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,459.18 : 105,510.08 = 42,469.86 : x
  2. Step 2: Convert to fraction form
    76,459.18/105,510.08 = 42,469.86/x
  3. Step 3: Cross multiply
    76,459.18x = 105,510.08 × 42,469.86
  4. Step 4: Simplify right side
    76,459.18x = 4,480,998,326.19
  5. Step 5: Solve for x
    x = 4,480,998,326.19/76,459.18
  6. Step 6: Final answer
    x = 58,606.41

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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.