Home / 78,110.19-107,792.10-42,300.36

Finding the Fourth Proportional to 78,110.19, 107,792.10 and 42,300.36

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Solution

The fourth proportional to 78,110.19, 107,792.10 and 42,300.36 is: 58,374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,110.19 : 107,792.10 = 42,300.36 : x
  2. Step 2: Convert to fraction form
    78,110.19/107,792.10 = 42,300.36/x
  3. Step 3: Cross multiply
    78,110.19x = 107,792.10 × 42,300.36
  4. Step 4: Simplify right side
    78,110.19x = 4,559,644,635.16
  5. Step 5: Solve for x
    x = 4,559,644,635.16/78,110.19
  6. Step 6: Final answer
    x = 58,374.52

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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.