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Finding the Fourth Proportional to 86,841.60, 130,262.40 and 51,266.40

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Solution

The fourth proportional to 86,841.60, 130,262.40 and 51,266.40 is: 76,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,841.60 : 130,262.40 = 51,266.40 : x
  2. Step 2: Convert to fraction form
    86,841.60/130,262.40 = 51,266.40/x
  3. Step 3: Cross multiply
    86,841.60x = 130,262.40 × 51,266.40
  4. Step 4: Simplify right side
    86,841.60x = 6,678,084,303.36
  5. Step 5: Solve for x
    x = 6,678,084,303.36/86,841.60
  6. Step 6: Final answer
    x = 76,899.60

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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.