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Finding the Fourth Proportional to 86,807.60, 130,211.40 and 51,232.40

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Solution

The fourth proportional to 86,807.60, 130,211.40 and 51,232.40 is: 76,848.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,807.60 : 130,211.40 = 51,232.40 : x
  2. Step 2: Convert to fraction form
    86,807.60/130,211.40 = 51,232.40/x
  3. Step 3: Cross multiply
    86,807.60x = 130,211.40 × 51,232.40
  4. Step 4: Simplify right side
    86,807.60x = 6,671,042,529.36
  5. Step 5: Solve for x
    x = 6,671,042,529.36/86,807.60
  6. Step 6: Final answer
    x = 76,848.60

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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.