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Finding the Fourth Proportional to 78,029.60, 107,681.21 and 44,039.51

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Solution

The fourth proportional to 78,029.60, 107,681.21 and 44,039.51 is: 60,774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,029.60 : 107,681.21 = 44,039.51 : x
  2. Step 2: Convert to fraction form
    78,029.60/107,681.21 = 44,039.51/x
  3. Step 3: Cross multiply
    78,029.60x = 107,681.21 × 44,039.51
  4. Step 4: Simplify right side
    78,029.60x = 4,742,226,966.00
  5. Step 5: Solve for x
    x = 4,742,226,966.00/78,029.60
  6. Step 6: Final answer
    x = 60,774.72

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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.