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Finding the Fourth Proportional to 107,030.16, 147,715.92 and 64,579.68

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Solution

The fourth proportional to 107,030.16, 147,715.92 and 64,579.68 is: 89,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,030.16 : 147,715.92 = 64,579.68 : x
  2. Step 2: Convert to fraction form
    107,030.16/147,715.92 = 64,579.68/x
  3. Step 3: Cross multiply
    107,030.16x = 147,715.92 × 64,579.68
  4. Step 4: Simplify right side
    107,030.16x = 9,539,446,844.51
  5. Step 5: Solve for x
    x = 9,539,446,844.51/107,030.16
  6. Step 6: Final answer
    x = 89,128.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.