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Finding the Fourth Proportional to 86,802.71, 130,214.48 and 30,631.22

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Solution

The fourth proportional to 86,802.71, 130,214.48 and 30,631.22 is: 45,950.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,802.71 : 130,214.48 = 30,631.22 : x
  2. Step 2: Convert to fraction form
    86,802.71/130,214.48 = 30,631.22/x
  3. Step 3: Cross multiply
    86,802.71x = 130,214.48 × 30,631.22
  4. Step 4: Simplify right side
    86,802.71x = 3,988,627,579.84
  5. Step 5: Solve for x
    x = 3,988,627,579.84/86,802.71
  6. Step 6: Final answer
    x = 45,950.50

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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.