Home / 76,315.97-105,312.33-42,325.80

Finding the Fourth Proportional to 76,315.97, 105,312.33 and 42,325.80

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Solution

The fourth proportional to 76,315.97, 105,312.33 and 42,325.80 is: 58,407.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,315.97 : 105,312.33 = 42,325.80 : x
  2. Step 2: Convert to fraction form
    76,315.97/105,312.33 = 42,325.80/x
  3. Step 3: Cross multiply
    76,315.97x = 105,312.33 × 42,325.80
  4. Step 4: Simplify right side
    76,315.97x = 4,457,428,617.11
  5. Step 5: Solve for x
    x = 4,457,428,617.11/76,315.97
  6. Step 6: Final answer
    x = 58,407.55

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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.