Home / 86,712.16-119,761.50-58,368.64

Finding the Fourth Proportional to 86,712.16, 119,761.50 and 58,368.64

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Solution

The fourth proportional to 86,712.16, 119,761.50 and 58,368.64 is: 80,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.16 : 119,761.50 = 58,368.64 : x
  2. Step 2: Convert to fraction form
    86,712.16/119,761.50 = 58,368.64/x
  3. Step 3: Cross multiply
    86,712.16x = 119,761.50 × 58,368.64
  4. Step 4: Simplify right side
    86,712.16x = 6,990,315,879.36
  5. Step 5: Solve for x
    x = 6,990,315,879.36/86,712.16
  6. Step 6: Final answer
    x = 80,615.17

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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.