Home / 71,742,985.89-99,005,077.74-40,381,017.09

Finding the Fourth Proportional to 71,742,985.89, 99,005,077.74 and 40,381,017.09

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Solution

The fourth proportional to 71,742,985.89, 99,005,077.74 and 40,381,017.09 is: 55,725,666.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,742,985.89 : 99,005,077.74 = 40,381,017.09 : x
  2. Step 2: Convert to fraction form
    71,742,985.89/99,005,077.74 = 40,381,017.09/x
  3. Step 3: Cross multiply
    71,742,985.89x = 99,005,077.74 × 40,381,017.09
  4. Step 4: Simplify right side
    71,742,985.89x = 3,997,925,736,215,718.50
  5. Step 5: Solve for x
    x = 3,997,925,736,215,718.50/71,742,985.89
  6. Step 6: Final answer
    x = 55,725,666.93

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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.