Home / 78,416.91-108,215.07-42,606.63

Finding the Fourth Proportional to 78,416.91, 108,215.07 and 42,606.63

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Solution

The fourth proportional to 78,416.91, 108,215.07 and 42,606.63 is: 58,797.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416.91 : 108,215.07 = 42,606.63 : x
  2. Step 2: Convert to fraction form
    78,416.91/108,215.07 = 42,606.63/x
  3. Step 3: Cross multiply
    78,416.91x = 108,215.07 × 42,606.63
  4. Step 4: Simplify right side
    78,416.91x = 4,610,679,447.91
  5. Step 5: Solve for x
    x = 4,610,679,447.91/78,416.91
  6. Step 6: Final answer
    x = 58,797.00

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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.