Home / 86,305,569.61-129,509,430.09-31,756,462.10

Finding the Fourth Proportional to 86,305,569.61, 129,509,430.09 and 31,756,462.10

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Solution

The fourth proportional to 86,305,569.61, 129,509,430.09 and 31,756,462.10 is: 47,653,486.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,305,569.61 : 129,509,430.09 = 31,756,462.10 : x
  2. Step 2: Convert to fraction form
    86,305,569.61/129,509,430.09 = 31,756,462.10/x
  3. Step 3: Cross multiply
    86,305,569.61x = 129,509,430.09 × 31,756,462.10
  4. Step 4: Simplify right side
    86,305,569.61x = 4,112,761,308,280,943
  5. Step 5: Solve for x
    x = 4,112,761,308,280,943/86,305,569.61
  6. Step 6: Final answer
    x = 47,653,486.64

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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.