Home / 78,036.70-107,690.43-42,227.32

Finding the Fourth Proportional to 78,036.70, 107,690.43 and 42,227.32

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Solution

The fourth proportional to 78,036.70, 107,690.43 and 42,227.32 is: 58,273.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,036.70 : 107,690.43 = 42,227.32 : x
  2. Step 2: Convert to fraction form
    78,036.70/107,690.43 = 42,227.32/x
  3. Step 3: Cross multiply
    78,036.70x = 107,690.43 × 42,227.32
  4. Step 4: Simplify right side
    78,036.70x = 4,547,478,248.55
  5. Step 5: Solve for x
    x = 4,547,478,248.55/78,036.70
  6. Step 6: Final answer
    x = 58,273.58

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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.