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Finding the Fourth Proportional to 86,762.90, 130,079.55 and 36,802.10

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Solution

The fourth proportional to 86,762.90, 130,079.55 and 36,802.10 is: 55,175.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,762.90 : 130,079.55 = 36,802.10 : x
  2. Step 2: Convert to fraction form
    86,762.90/130,079.55 = 36,802.10/x
  3. Step 3: Cross multiply
    86,762.90x = 130,079.55 × 36,802.10
  4. Step 4: Simplify right side
    86,762.90x = 4,787,200,607.06
  5. Step 5: Solve for x
    x = 4,787,200,607.06/86,762.90
  6. Step 6: Final answer
    x = 55,175.66

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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.