Home / 85,850,274.61-128,828,379.71-39,783,557.09

Finding the Fourth Proportional to 85,850,274.61, 128,828,379.71 and 39,783,557.09

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Solution

The fourth proportional to 85,850,274.61, 128,828,379.71 and 39,783,557.09 is: 59,699,881.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850,274.61 : 128,828,379.71 = 39,783,557.09 : x
  2. Step 2: Convert to fraction form
    85,850,274.61/128,828,379.71 = 39,783,557.09/x
  3. Step 3: Cross multiply
    85,850,274.61x = 128,828,379.71 × 39,783,557.09
  4. Step 4: Simplify right side
    85,850,274.61x = 5,125,251,199,004,983
  5. Step 5: Solve for x
    x = 5,125,251,199,004,983/85,850,274.61
  6. Step 6: Final answer
    x = 59,699,881.24

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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.