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Finding the Fourth Proportional to 58,550, 87,826.32 and 21,113.12

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Solution

The fourth proportional to 58,550, 87,826.32 and 21,113.12 is: 31,670.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,550 : 87,826.32 = 21,113.12 : x
  2. Step 2: Convert to fraction form
    58,550/87,826.32 = 21,113.12/x
  3. Step 3: Cross multiply
    58,550x = 87,826.32 × 21,113.12
  4. Step 4: Simplify right side
    58,550x = 1,854,287,633.32
  5. Step 5: Solve for x
    x = 1,854,287,633.32/58,550
  6. Step 6: Final answer
    x = 31,670.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.