Home / 42,278.76-58,368.60-28,869.48

Finding the Fourth Proportional to 42,278.76, 58,368.60 and 28,869.48

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Solution

The fourth proportional to 42,278.76, 58,368.60 and 28,869.48 is: 39,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.76 : 58,368.60 = 28,869.48 : x
  2. Step 2: Convert to fraction form
    42,278.76/58,368.60 = 28,869.48/x
  3. Step 3: Cross multiply
    42,278.76x = 58,368.60 × 28,869.48
  4. Step 4: Simplify right side
    42,278.76x = 1,685,071,130.33
  5. Step 5: Solve for x
    x = 1,685,071,130.33/42,278.76
  6. Step 6: Final answer
    x = 39,856.21

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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.