Home / 78,032.84-107,685.30-42,222.84

Finding the Fourth Proportional to 78,032.84, 107,685.30 and 42,222.84

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Solution

The fourth proportional to 78,032.84, 107,685.30 and 42,222.84 is: 58,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,032.84 : 107,685.30 = 42,222.84 : x
  2. Step 2: Convert to fraction form
    78,032.84/107,685.30 = 42,222.84/x
  3. Step 3: Cross multiply
    78,032.84x = 107,685.30 × 42,222.84
  4. Step 4: Simplify right side
    78,032.84x = 4,546,779,617.86
  5. Step 5: Solve for x
    x = 4,546,779,617.86/78,032.84
  6. Step 6: Final answer
    x = 58,267.51

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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.