Home / 78,046.19-107,702.91-42,235.40

Finding the Fourth Proportional to 78,046.19, 107,702.91 and 42,235.40

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Solution

The fourth proportional to 78,046.19, 107,702.91 and 42,235.40 is: 58,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,046.19 : 107,702.91 = 42,235.40 : x
  2. Step 2: Convert to fraction form
    78,046.19/107,702.91 = 42,235.40/x
  3. Step 3: Cross multiply
    78,046.19x = 107,702.91 × 42,235.40
  4. Step 4: Simplify right side
    78,046.19x = 4,548,875,485.01
  5. Step 5: Solve for x
    x = 4,548,875,485.01/78,046.19
  6. Step 6: Final answer
    x = 58,284.40

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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.