Home / 81,478,797.09-112,736,827.56-71,046,567.21

Finding the Fourth Proportional to 81,478,797.09, 112,736,827.56 and 71,046,567.21

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Solution

The fourth proportional to 81,478,797.09, 112,736,827.56 and 71,046,567.21 is: 98,302,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,478,797.09 : 112,736,827.56 = 71,046,567.21 : x
  2. Step 2: Convert to fraction form
    81,478,797.09/112,736,827.56 = 71,046,567.21/x
  3. Step 3: Cross multiply
    81,478,797.09x = 112,736,827.56 × 71,046,567.21
  4. Step 4: Simplify right side
    81,478,797.09x = 8,009,564,596,283,720
  5. Step 5: Solve for x
    x = 8,009,564,596,283,720/81,478,797.09
  6. Step 6: Final answer
    x = 98,302,440.42

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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.