Home / 76,300.61-105,289.13-42,760.13

Finding the Fourth Proportional to 76,300.61, 105,289.13 and 42,760.13

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Solution

The fourth proportional to 76,300.61, 105,289.13 and 42,760.13 is: 59,005.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,300.61 : 105,289.13 = 42,760.13 : x
  2. Step 2: Convert to fraction form
    76,300.61/105,289.13 = 42,760.13/x
  3. Step 3: Cross multiply
    76,300.61x = 105,289.13 × 42,760.13
  4. Step 4: Simplify right side
    76,300.61x = 4,502,176,466.84
  5. Step 5: Solve for x
    x = 4,502,176,466.84/76,300.61
  6. Step 6: Final answer
    x = 59,005.78

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1.5x scale

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.