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Finding the Fourth Proportional to 86,853.02, 130,051.13 and 69,895.86

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Solution

The fourth proportional to 86,853.02, 130,051.13 and 69,895.86 is: 104,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,853.02 : 130,051.13 = 69,895.86 : x
  2. Step 2: Convert to fraction form
    86,853.02/130,051.13 = 69,895.86/x
  3. Step 3: Cross multiply
    86,853.02x = 130,051.13 × 69,895.86
  4. Step 4: Simplify right side
    86,853.02x = 9,090,035,225.84
  5. Step 5: Solve for x
    x = 9,090,035,225.84/86,853.02
  6. Step 6: Final answer
    x = 104,659.98

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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.