Home / 88,271.58-121,809.66-47,985

Finding the Fourth Proportional to 88,271.58, 121,809.66 and 47,985

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Solution

The fourth proportional to 88,271.58, 121,809.66 and 47,985 is: 66,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,271.58 : 121,809.66 = 47,985 : x
  2. Step 2: Convert to fraction form
    88,271.58/121,809.66 = 47,985/x
  3. Step 3: Cross multiply
    88,271.58x = 121,809.66 × 47,985
  4. Step 4: Simplify right side
    88,271.58x = 5,845,036,535.10
  5. Step 5: Solve for x
    x = 5,845,036,535.10/88,271.58
  6. Step 6: Final answer
    x = 66,216.52

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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.