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Finding the Fourth Proportional to 86,659.44, 130,023.72 and 31,259.76

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Solution

The fourth proportional to 86,659.44, 130,023.72 and 31,259.76 is: 46,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,659.44 : 130,023.72 = 31,259.76 : x
  2. Step 2: Convert to fraction form
    86,659.44/130,023.72 = 31,259.76/x
  3. Step 3: Cross multiply
    86,659.44x = 130,023.72 × 31,259.76
  4. Step 4: Simplify right side
    86,659.44x = 4,064,510,281.51
  5. Step 5: Solve for x
    x = 4,064,510,281.51/86,659.44
  6. Step 6: Final answer
    x = 46,902.11

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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.