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Finding the Fourth Proportional to 86,740.70, 130,111.05 and 51,748.70

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Solution

The fourth proportional to 86,740.70, 130,111.05 and 51,748.70 is: 77,623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,740.70 : 130,111.05 = 51,748.70 : x
  2. Step 2: Convert to fraction form
    86,740.70/130,111.05 = 51,748.70/x
  3. Step 3: Cross multiply
    86,740.70x = 130,111.05 × 51,748.70
  4. Step 4: Simplify right side
    86,740.70x = 6,733,077,693.14
  5. Step 5: Solve for x
    x = 6,733,077,693.14/86,740.70
  6. Step 6: Final answer
    x = 77,623.05

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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.