Home / 58,659.16-87,988.69-21,210.45

Finding the Fourth Proportional to 58,659.16, 87,988.69 and 21,210.45

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Solution

The fourth proportional to 58,659.16, 87,988.69 and 21,210.45 is: 31,815.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,659.16 : 87,988.69 = 21,210.45 : x
  2. Step 2: Convert to fraction form
    58,659.16/87,988.69 = 21,210.45/x
  3. Step 3: Cross multiply
    58,659.16x = 87,988.69 × 21,210.45
  4. Step 4: Simplify right side
    58,659.16x = 1,866,279,709.81
  5. Step 5: Solve for x
    x = 1,866,279,709.81/58,659.16
  6. Step 6: Final answer
    x = 31,815.66

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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.