Home / 76,650,258.32-105,508,871.88-66,843,400.40

Finding the Fourth Proportional to 76,650,258.32, 105,508,871.88 and 66,843,400.40

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Solution

The fourth proportional to 76,650,258.32, 105,508,871.88 and 66,843,400.40 is: 92,009,758.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,650,258.32 : 105,508,871.88 = 66,843,400.40 : x
  2. Step 2: Convert to fraction form
    76,650,258.32/105,508,871.88 = 66,843,400.40/x
  3. Step 3: Cross multiply
    76,650,258.32x = 105,508,871.88 × 66,843,400.40
  4. Step 4: Simplify right side
    76,650,258.32x = 7,052,571,768,827,140
  5. Step 5: Solve for x
    x = 7,052,571,768,827,140/76,650,258.32
  6. Step 6: Final answer
    x = 92,009,758.65

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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.