Home / 78,549.34-108,400.03-42,741.32

Finding the Fourth Proportional to 78,549.34, 108,400.03 and 42,741.32

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Solution

The fourth proportional to 78,549.34, 108,400.03 and 42,741.32 is: 58,984.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,549.34 : 108,400.03 = 42,741.32 : x
  2. Step 2: Convert to fraction form
    78,549.34/108,400.03 = 42,741.32/x
  3. Step 3: Cross multiply
    78,549.34x = 108,400.03 × 42,741.32
  4. Step 4: Simplify right side
    78,549.34x = 4,633,159,828.24
  5. Step 5: Solve for x
    x = 4,633,159,828.24/78,549.34
  6. Step 6: Final answer
    x = 58,984.07

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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.