Home / 85,965,663.12-128,949,489.76-36,774,828.06

Finding the Fourth Proportional to 85,965,663.12, 128,949,489.76 and 36,774,828.06

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Solution

The fourth proportional to 85,965,663.12, 128,949,489.76 and 36,774,828.06 is: 55,162,667.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,965,663.12 : 128,949,489.76 = 36,774,828.06 : x
  2. Step 2: Convert to fraction form
    85,965,663.12/128,949,489.76 = 36,774,828.06/x
  3. Step 3: Cross multiply
    85,965,663.12x = 128,949,489.76 × 36,774,828.06
  4. Step 4: Simplify right side
    85,965,663.12x = 4,742,095,314,348,731
  5. Step 5: Solve for x
    x = 4,742,095,314,348,731/85,965,663.12
  6. Step 6: Final answer
    x = 55,162,667.77

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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.