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Finding the Fourth Proportional to 85,670.70, 128,506.03 and 23,341.20

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Solution

The fourth proportional to 85,670.70, 128,506.03 and 23,341.20 is: 35,011.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,670.70 : 128,506.03 = 23,341.20 : x
  2. Step 2: Convert to fraction form
    85,670.70/128,506.03 = 23,341.20/x
  3. Step 3: Cross multiply
    85,670.70x = 128,506.03 × 23,341.20
  4. Step 4: Simplify right side
    85,670.70x = 2,999,484,407.19
  5. Step 5: Solve for x
    x = 2,999,484,407.19/85,670.70
  6. Step 6: Final answer
    x = 35,011.79

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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.