Home / 78,422,502.56-108,222,455.08-43,139,547.91

Finding the Fourth Proportional to 78,422,502.56, 108,222,455.08 and 43,139,547.91

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Solution

The fourth proportional to 78,422,502.56, 108,222,455.08 and 43,139,547.91 is: 59,532,246.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,422,502.56 : 108,222,455.08 = 43,139,547.91 : x
  2. Step 2: Convert to fraction form
    78,422,502.56/108,222,455.08 = 43,139,547.91/x
  3. Step 3: Cross multiply
    78,422,502.56x = 108,222,455.08 × 43,139,547.91
  4. Step 4: Simplify right side
    78,422,502.56x = 4,668,667,785,808,241
  5. Step 5: Solve for x
    x = 4,668,667,785,808,241/78,422,502.56
  6. Step 6: Final answer
    x = 59,532,246.91

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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.