Home / 78,347.36-108,120.48-42,537.44

Finding the Fourth Proportional to 78,347.36, 108,120.48 and 42,537.44

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Solution

The fourth proportional to 78,347.36, 108,120.48 and 42,537.44 is: 58,702.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,347.36 : 108,120.48 = 42,537.44 : x
  2. Step 2: Convert to fraction form
    78,347.36/108,120.48 = 42,537.44/x
  3. Step 3: Cross multiply
    78,347.36x = 108,120.48 × 42,537.44
  4. Step 4: Simplify right side
    78,347.36x = 4,599,168,430.77
  5. Step 5: Solve for x
    x = 4,599,168,430.77/78,347.36
  6. Step 6: Final answer
    x = 58,702.28

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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.